Method for Air Removal from a Water-Closet Bowl and a Device for air removal from a water-closet bowl

ABSTRACT

A method for air removal from a water-closet bowl consisting in the directing of the air from the water-closet bowl to a vertical ventilation duct where partial vacuum is generated under any weather conditions A device for air removal from a water-closet bowl whose toilet seat ( 4 ) has a passage ( 8 ) with slots ( 10 ) in its internal wall, and moreover two coaxial flange tubes ( 5 ) are connected to the said passage ( 8 ), upon which a seat cover ( 3 ) and a toilet seat ( 4 ) are mounted pivotally, and one of the said flange tubes ( 5 ) is connected to one end of a piping ( 11 ), and the other end of the said piping ( 11 ) is coupled with the vertical ventilation duct ( 1 ) which is laid out along the waste riser ( 24 ) and the outlets of the duct branches are in the vicinity of the water-closet bowl ( 2 ), and furthermore a cowl ( 12 ) with a head (13) which terminates with a broadening cone and an air louver ( 14 ) is installed upon the roof outlet of the vertical ventilation duct ( 1 ).

This invention relates to a method for air removal from a water-closetbowl and a device for air removal from a water-closet bowl, which can beused in sanitation rooms where water-closet bowls are installed.

A toilet ventilation system is known, as stated in the Polish patentapplication No. 361214, consisting in connection of a water-closet unit(comprising a water-closet bowl with a water supply channel or pipe forflushing the inside of the water-closet bowl, and a toilet flush unit)with the space on the outside of the room by means of a ventilationduct, in which the said unit is installed. The ventilation duct can beconnected to a special opening in the water-closet bowl or to an openingunder the toilet flush unit bottom or to the pipe supplying water fromthe toilet flush unit into the bowl. Such connection of the ventilationduct makes the contaminated air to be sucked out from the water-closetbowl avoiding its spreading outside the bowl.

A toilet seat unit is known, as stated in the Polish patent applicationNo. 328361, comprising a toilet cover and a toilet seat, which areconnected by an external wall situated of the outer edge side of thetoilet seat unit. The toilet cover comprises an apron which forms aventilation gap together with the hole outer edge of the toilet seat.According to the variation of the invention the toilet seat unitcomprises a toilet cover and a toilet seat connected by an external wallsituated of the outer edge side of the toilet seat unit and an internalwall situated of the hole outer edge side of the toilet seat0. There areventilation openings which are carried out in the internal wall. In bothoptions there is at least one sucking-off opening in the rear part ofthe toilet seat unit used to connect the space between both parts of thetoilet seat unit with the suction line of the suction device.

A water-closet bowl ventilation system is known, as stated in the Polishpatent application No. 336826, in which an air curtain at a level of thetoilet seat of the water-closet bowl is created by forced air flow drawnfrom the room where the water-closet bowl is installed by means ofventilation ducts located upon the outer edge of the water-closet bowland/or in the toilet seat unit, and then directed to any externalventilation duct by means of a discharge duct.

The method, according to the invention, for self-acting air removal froma water-closet bowl to the atmosphere utilizing gravity ventilation,consists in air removal from a water-closet bowl via verticalventilation duct where partial vacuum is generated under any weatherconditions.

The method, according to the invention, is simpler for implementationand utilization than the methods in which artificial draught isgenerated by means of fans and suction pumps.

The device for air removal from a water-closet bowl according to theinvention is executed in such a way that a toilet seat has a passagewith slots in its internal wall, and moreover two coaxial flange tubesare connected to the said passage, upon which a seat cover and a toiletseat are mounted pivotally, and one of the said flange tubes isconnected to one end of the piping, and the other end of the said pipingis coupled with the vertical ventilation duct which is laid out alongthe waste riser and the outlets of the duct branches are in the vicinityof water-closet bowls, and furthermore a cowl with a head whichterminates with a broadening cone and an air louver is installed uponthe roof outlet of the vertical ventilation duct. The other executionoption of the device for air removal from a water-closet bowl accordingto the invention is executed in such a way that a toilet seat has apassage with slots in its internal wall, and moreover two coaxial flangetubes are connected to the said passage, upon which a seat cover and atoilet seat are mounted pivotally, and one of the said flange tubes isconnected to one end of the piping, and the other end of the said pipingis coupled with the vertical ventilation duct which is put into theexisting ventilation duct and branches into ventilation grilles, andfurthermore a cowl with a head which terminates with a broadening coneand an air louver is installed upon the roof outlet of the verticalventilation duct, and the endmost section of the vertical ventilationduct in its upper part is installed to the chimney by means of a supportwith openings.

It is an advantage of the device according to the invention to preventcontaminated air escape from the sewerage system due to application of aseparate air-tight vertical ventilation duct and utilization of thenatural draught resulting in that that no mechanical ventilation devicesare necessary. The cowl used at the roof outlet of the verticalventilation duct prevents the air from the returning to sanitation roomsunder bad weather conditions.

The device according to the invention is presented in the illustrationas an exemplary execution, in which FIG. 1 shows a two-storey verticalventilation duct section in the first option of the device execution,FIG. 2 shows a single-storey vertical ventilation duct section in theother option of the device, FIG. 3 shows a bottom half-view of thetoilet seat with the toilet cover closed and its half-section in thehorizontal plane connected with the vertical ventilation duct by thepiping and FIG. 4 shows a cross-section of the toilet seat unit by thesymmetry plane.

The device according to the invention has a separate verticalventilation duct 1 a water-closet bowl 2 and a toilet seat unitcomprising a toilet cover _ a toilet seat A two flange tubes A twofastening clamps 6 and a plug 7. A passage 8 is formed in the toiletseat 4 and concealed with a cover 9 which is fitted out with slots 10 inits internal wall. The flange tube 5 is connected with the verticalventilation duct 1 by means of a piping 11 which has a cowl 12 with ahead 13 terminated with a cone and an air louver 14. The verticalventilation duct 1 is located in duct 15 cast into the wall next to thevertical ventilation duct 24. The section of the vertical ventilationduct 1 situated inside the duct 15 is made from pipes and three-waypipes. The duct 15 is covered from the top with a support 16 whichunloads mechanically the lower part of the vertical ventilation duct 1.Over the support 16 there is a raising pipe 17 and a cowl 12 with a head13 and an air louver 14. The support 16 is fixed to the chimney 18 withdamps, and the cowl 12 is held in vertical position by flexibleconnectors 19.

The device in the other execution option has a separate verticalventilation duct 1, a water-closet bowl 2 and a toilet seat unitcomprising a toilet cover 3, a toilet seat 4, two flange tubes 5, twofastening clamps 6 and a plug Z. A passage 8 is formed in the toiletseat 4 and concealed with a cover 9 which is fitted out with slots 10 inits internal wall. The flange tube 5 is connected with the verticalventilation duct 1 by means of a piping 11 which has a cowl 12 with ahead 13 terminated with a cone and an air louver 14. The verticalventilation duct 1 is located in the ventilation duct 21 which vents thesanitation room The section of the vertical ventilation duct 1 situatedinside the duct 21 is made from pipes and three-way pipes. The duct 21is covered from the top with a support 22 which has four openings 23making sanitation room ventilation possible to continue. Over thesupport 22 there is a raising pipe 17 and a cowl 12 with a head 13 andan air louver 14. The support 22 is fixed to the chimney 18 with clamps,and the cowl 12 is held in vertical position by four flexible connectors19.

1. A method of air removal from a water-closet bowl to the atmospherethrough a vertical ventilation pipe, characterized in that gravitationalsuction generated in vertical ventilation pipe (1) is enhanced byaerodynamic suction generated in a cowl (12) fitted out with a head (13)adjusting its position relatively to the direction of flow of externalair by means of a guide wing and preventing from the air reversal flowby means of an air louver (14).
 2. The method according to claim 1,where vertical ventilation pipe (1) is placed along a waste riser (24).3. The method according to claim 2, where vertical ventilation pipe (1)is to be placed in newly constructed building.
 4. The method accordingto claim 1, where vertical ventilation pipe (1) is placed in aventilation duct (21), and where the upper end of a piping (11) passesthrough a ventilation grille (20) of the ventilation duct (21), and theupper end of vertical ventilation pipe (1) is installed upon the outletof the ventilation duct (21) by means of a support (22) with theopenings (23).
 5. The method according to claim 4, where verticalventilation pipe (1) is to be placed in existing buildings.
 6. Anapparatus for air removal from a water-closet bowl comprising a toiletseat with a cover and a piping joining the toilet seat to verticalventilation pipe, characterized in that vertical ventilation pipe (1) issupplied at its upper end with the cowl (12) fitted out with the head(13) adjusting its position relatively to the direction of flow ofexternal air by means of the guide wing and preventing from the airreversal flow by means of the air louver (14).
 7. The apparatusaccording to claim 6, where two separated flanged pipes (5) arecoaxially installed in the rear of a toilet seat (4) and a toilet cover(3), and which are fastened to the water-closet bowl (2) thus definingan axis of rotation for the toilet seat (4) and the toilet cover (3),and which communicate at one end with a passage (8) and at the other endwith the piping (11).
 8. The apparatus according to claim 7, where thepassage (8) is shaped at lower side of the toilet seat (4) and is closedby a cover (9) which has side walls facing the side walls of the passage(8).
 9. The apparatus according to claim 8, where the recesses (10) inthe side walls of the passage (8) and in the side walls of the cover (9)enable the air to be sucked from the interior of the water-closet bowl(2) through the passage (8), flanged pipes (5), the piping (11) andvertical ventilation pipe (1) and further exhausted through the cowl(12) fitted out with a head (13) which terminates with a broadening coneand an air louver (14).
 10. The apparatus according to claim 6, wherevertical ventilation pipe (1) is placed in the ventilation duct (21),and where the upper end of the piping (11) passes through theventilation grille (20) of the ventilation duct (21), and the upper endof vertical ventilation pipe (1) is installed upon the outlet of theventilation duct (21) by means of the support (22) with the openings(23).